What Is Tinplate Coil?

tinplate coil

What Is Tinplate Coil?

Tinplate coil is a metal strip that has been coated with tin. The tin layer protects the steel surface from corrosion and offers high resistance to temperature change.

The tinplate can be either equally or differentially coated. The coating is applied either through dipping in molten tin or by electrolytic deposition.

Corrosion Resistant

Tinplate coils are made of cold-rolled steel that is coated with commercial pure tin. The tin coating prevents corrosion and gives the coil its aesthetic appeal. This material is also non-toxic, allowing it to be used in food packaging. This makes it a great option for canned foods and beverages.

The tinplate is then passed through tempering, which can be done continuously or in batch-type furnaces. This process involves a light reduction with no lubrication and a very light surface treatment. The result is a coil tinplate coil with a very high level of corrosion resistance and excellent solderability.

The tinplate can be formed into different sizes and styles, including transverse bow and cross-bow. The former is a form that bends into four parts of a circle, while the latter is a form that curves into two parts of a circle. Both forms are capable of carrying conventional painting and printing.


Tinplate is a cold-rolled steel sheet or strip coated with commercial pure tin on both sides. It combines the strength and formability of steel with the corrosion resistance, weldability, paintability, and aesthetics of tin. This material is used in the manufacture of metal packaging products like cans, aerosol containers, and other household goods.

The tin coating protects these products from contamination, light, and oxygen, maintaining their quality and freshness. It is also a popular choice for manufacturing metal industrial products.

During the production process, the tinplate is cold rolled or hot rolled depending on its application requirements. It is then annealed to improve its ductility and soft processing performance. This is done through batch annealing or box annealing. This step is vital as it enables the tinplate to maintain its shape while still providing high tensile and elongation properties. It also helps prevent corrosion and rust.


Tinplate coils are insulated to prevent heat and cold from affecting the contents of the package. This feature also helps to prolong the shelf life of packaged products. This is especially important for chemicals, food, or other sensitive materials. The insulation also prevents the product from leaking or breaking during transportation and storage.

The insulating process is accomplished by placing a layer of mica between the steel strip and a cellulose ester wrap. The cellulose ester is free of ingredients that could volatilize during operating temperatures and it will closely bind the mica to the tinplate coil.

The substrate used for tinplate is made of a steel alloy consisting mainly of carbon, manganese, silicon, and phosphorus. It is coated with tin in a special electrolytic process that uses anode and cathode to leach off impurities from the steel. It is then cold reduced, annealed, and rolled twice. The double rolling process produces soft tinplate with a higher yield strength and a better mechanical property than single-reduced ETP.

High Barrier Properties

Tinplate coil has high barrier properties that protect against corrosion and other environmental hazards. It also has excellent formability, solderability and paintability. These qualities make it ideal for making food and beverage packaging cans, aerosol cans, and chemical cans.

Tin plate is made by cold-reducing the steel in tandem or reversible mills with a combination of lubricants and coolants. The resulting metal strip is very hard and requires a special treatment to ensure its machinability. This treatment is called annealing and can be done in continuous or bell-type furnaces.

Henkel’s portfolio of strong alkaline cleaners helps to eliminate soluble contaminants that can affect tinplate coating quality. These products also help to clean rust and scale from the surface of the tinplate, improving adhesion and corrosion resistance. The tinplate can be equally Hardened & Tempered Steel Strip Supplier or differentially coated, depending on the desired application. This coating can be treated with various passivation treatments to prevent oxidation.

High Impact Resistance

Tinplate coils are typically produced using either hot or cold rolling techniques. Each method produces different gauges and thicknesses to suit specific application needs. Typically, hot rolled tinplate turns out thicker than the cold rolled version.

Both kinds of tinplate are passivated during production to prevent corrosion. The tin coating also provides resistance against chemicals, paints, and varnishes to prevent contamination and degradation of the products contained inside.

Because of its high strength, good molding, easy welding and non-toxic properties, tinplate is used to make a wide variety of containers. These include food cans, beverage cans, tin lids, bottom caps, pails and decorative cans. Additionally, tinplate is also frequently used to make metal parts for appliances, motors, and other machinery. Its paintability allows for logos and trademarks to be incorporated into the final product. It is also non-toxic and tasteless, making it perfect for use in food packaging.


Whether it’s for food or aerosol products, the high barrier properties of tinplate coil ensure that the contents are protected from light, oxygen and moisture. This helps preserve their freshness, flavor, and aroma. Tinplate is also recyclable, which reduces waste and is a more environmentally-friendly material than plastic.

The steel substrate used to make tinplate coils is either cold-rolled or hot rolled, and the metallurgical composition determines its mechanical properties and performance. This includes the levels of carbon, manganese, silicon, phosphorus and sulfur. Chromium can be added to the metal to improve its surface finish and corrosion resistance.

Tinplate is made of a sheet of cold-rolled low-carbon steel that’s coated with commercial pure tin on both sides. This combines the strength and formability of steel with the non-corrosive, non-toxic, and aesthetic qualities of tin. It can be rolled into sheets or coiled into tightly wound reels to create containers for various products, including foods and drinks, paints and chemicals.

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